Question

Find the weight of a 1 gram object at the earth's surface? With solution

Answer 1

Weight of an object on the surface of earth is just the force exerted by the object on earth.

We know that F = ma

So, Weight = m × a

=> weight = m × g (g = acceleration due to gravity)

For calculating weight in Newton, the mass should be in kg and the acceleration should be in m/s²

Given mass = 1 gram = 0.001 kg

Taking g as 10 m/s² we get,

weight = 0.001 × 10

=> weight = 0.01 Newton.


Or taking g as 9.8 m/s², we get

weight = 0.001 × 9.8

=> weight = 0.0098 Newton.

Answer 2

weight w = mass * gravity
g=10m/s
w=0.001kg*10
w=0.01N